Polyad
几个紧密相关的零件或元件的组合
🗣️ 情景例句
How many are there in your family?
你们家几口人？
When are visiting hours over?
探病的时间到几点为止呢？
It's nearly ready.We can have dinner at seven o'clock.
马上就好。7点钟我们可以吃饭。